More like months, according to the IEEE: http://spectrum.ieee.org/energy/the-sma... | Hacker News

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DennisP on May 3, 2012 | parent | context | favorite | on: 1859's "Great Auroral Storm"—the week the Sun touc...

More like months, according to the IEEE: http://spectrum.ieee.org/energy/the-smarter-grid/a-perfect-s...

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